【摘要】 针对目前惯导精度较低,不能精确地对高速SAR平台进行定位的问题,提出了一种基于数字地图高精度配准后再对高速SAR平台进行定位的方法。该方法通过得到SAR图像中所匹配点目标的位置信息来确定高速SAR平台的瞬时位置,将提高高速SAR平台的定位精度,其定位精度可在2~3 m之内。同时,还利用回波数据的多普勒信息对高速SAR平台瞬时测速的可行性进行了分析。最后,通过仿真实验证明了该方法的有效性。更多还原

【Abstract】 Because the positioning precision of high speed SAR plane using inertia navigation data of low precision directly is very low.A positioning method of high speed SAR plane based on number map after high precision matching is proposed.It chooses some points in the SAR image,acquires their positions in the number map and by some points positions,calculates the instantaneous position of high speed SAR plane.This method improves the positioning precision of high speed SAR plane that can achieve 2~3 m.At the same time,the feasibility of instantaneous speed measure of high speed SAR plane is analyzed.Finally,the simulation analysis confirms the effectiveness of this method.更多还原